@TRS-80 said in Finally, progress! (evidence based radio testing method):
Perhaps one of you professional angry pixie wranglers out there can verify that there is in fact something to the "two capacitors of different values in parallel" theory?
Two capacitors in parallel lowers the ISR of the capacitance attached to the circuit, meaning it "reacts faster" to the changes in voltage and acts as a better filter. As BearWithBeard said, you can achieve a similar effect by combining electrolytic and ceramic capacitors. If you have a lot of LF and HF noise, that might give you a better result.